/*
* Copyright (c) 2024, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/NumberFormat.h>
#include <AK/String.h>
#include <LibCore/EventLoop.h>
#include <LibCore/System.h>
#include <LibWebView/ProcessManager.h>
namespace WebView {
ProcessType process_type_from_name(StringView name)
{
if (name == "Chrome"sv)
return ProcessType::Chrome;
if (name == "WebContent"sv)
return ProcessType::WebContent;
if (name == "WebWorker"sv)
return ProcessType::WebWorker;
if (name == "RequestServer"sv)
return ProcessType::RequestServer;
if (name == "ImageDecoder"sv)
return ProcessType::ImageDecoder;
dbgln("Unknown process type: '{}'", name);
VERIFY_NOT_REACHED();
}
StringView process_name_from_type(ProcessType type)
{
switch (type) {
case ProcessType::Chrome:
return "Chrome"sv;
case ProcessType::WebContent:
return "WebContent"sv;
case ProcessType::WebWorker:
return "WebWorker"sv;
case ProcessType::RequestServer:
return "RequestServer"sv;
case ProcessType::ImageDecoder:
return "ImageDecoder"sv;
}
VERIFY_NOT_REACHED();
}
ProcessManager::ProcessManager()
: on_process_exited([](Process&&) { })
{
m_signal_handle = Core::EventLoop::register_signal(SIGCHLD, [this](int) {
auto result = Core::System::waitpid(-1, WNOHANG);
while (!result.is_error() && result.value().pid > 0) {
auto& [pid, status] = result.value();
if (WIFEXITED(status) || WIFSIGNALED(status)) {
if (auto process = remove_process(pid); process.has_value())
on_process_exited(process.release_value());
}
result = Core::System::waitpid(-1, WNOHANG);
}
});
add_process(Process(WebView::ProcessType::Chrome, nullptr, Core::Process::current()));
#ifdef AK_OS_MACH
auto self_send_port = mach_task_self();
auto res = mach_port_mod_refs(mach_task_self(), self_send_port, MACH_PORT_RIGHT_SEND, +1);
VERIFY(res == KERN_SUCCESS);
set_process_mach_port(getpid(), Core::MachPort::adopt_right(self_send_port, Core::MachPort::PortRight::Send));
#endif
}
ProcessManager::~ProcessManager()
{
Core::EventLoop::unregister_signal(m_signal_handle);
}
Optional<Process&> ProcessManager::find_process(pid_t pid)
{
return m_processes.get(pid);
}
void ProcessManager::add_process(WebView::Process&& process)
{
Threading::MutexLocker locker { m_lock };
auto pid = process.pid();
auto result = m_processes.set(pid, move(process));
VERIFY(result == AK::HashSetResult::InsertedNewEntry);
m_statistics.processes.append(make<Core::Platform::ProcessInfo>(pid));
}
#if defined(AK_OS_MACH)
void ProcessManager::set_process_mach_port(pid_t pid, Core::MachPort&& port)
{
Threading::MutexLocker locker { m_lock };
for (auto const& info : m_statistics.processes) {
if (info->pid == pid) {
info->child_task_port = move(port);
return;
}
}
}
#endif
Optional<Process> ProcessManager::remove_process(pid_t pid)
{
Threading::MutexLocker locker { m_lock };
m_statistics.processes.remove_first_matching([&](auto const& info) {
return (info->pid == pid);
});
return m_processes.take(pid);
}
void ProcessManager::update_all_process_statistics()
{
Threading::MutexLocker locker { m_lock };
(void)update_process_statistics(m_statistics);
}
String ProcessManager::generate_html()
{
Threading::MutexLocker locker { m_lock };
StringBuilder builder;
builder.append(R"(
<html>
<head>
<title>Task Manager</title>
<style>
@media (prefers-color-scheme: dark) {
tr:nth-child(even) {
background: rgb(57, 57, 57);
}
}
@media (prefers-color-scheme: light) {
tr:nth-child(even) {
background: #f7f7f7;
}
}
html {
color-scheme: light dark;
}
table {
width: 100%;
border-collapse: collapse;
}
th {
text-align: left;
border-bottom: 1px solid #aaa;
}
td, th {
padding: 4px;
border: 1px solid #aaa;
}
</style>
</head>
<body>
<table>
<thead>
<tr>
<th>Name</th>
<th>PID</th>
<th>Memory Usage</th>
<th>CPU %</th>
</tr>
</thead>
<tbody>
)"sv);
m_statistics.for_each_process([&](auto const& process) {
builder.append("<tr>"sv);
builder.append("<td>"sv);
auto& process_handle = this->find_process(process.pid).value();
builder.append(WebView::process_name_from_type(process_handle.type()));
if (process_handle.title().has_value())
builder.appendff(" - {}", escape_html_entities(*process_handle.title()));
builder.append("</td>"sv);
builder.append("<td>"sv);
builder.append(String::number(process.pid));
builder.append("</td>"sv);
builder.append("<td>"sv);
builder.append(human_readable_size(process.memory_usage_bytes));
builder.append("</td>"sv);
builder.append("<td>"sv);
builder.append(MUST(String::formatted("{:.1f}", process.cpu_percent)));
builder.append("</td>"sv);
builder.append("</tr>"sv);
});
builder.append(R"(
</tbody>
</table>
</body>
</html>
)"sv);
return builder.to_string_without_validation();
}
}